Schatz, K. (1986). Managing by influence. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Schatz, Kenneth. Managing by Influence. Englewood Cliffs, N.J: Prentice-Hall, 1986.
Lua MLA (9ú heag.)Schatz, Kenneth. Managing by Influence. Prentice-Hall, 1986.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.